node-only jsforce

[mshanemc]

We're working towards using Discussions as our roadmap. So you'll see some Discussions created by us to capture things we already committed to do.

We're working on a new node-only version of jsforce. You can read more here jsforce/jsforce#1374.

It's going to reduce sf's dependencies (jsforce is our largest dependency and brings a lot of its own dependencies that the CLI isn't using) which should improve runtime perf, install/update/delete times, etc.

Work involves the jsforce changes and updating everywhere the CLI uses jsforce.